Questions tagged [arp]

For questions about Address Resolution Protocol (ARP). ARP resolves OSI layer-3 addresses to OSI layer-2 addresses.

10 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
4
votes
1answer
190 views

Cisco DAI / arp inspection limit

During a recent penetration test it was found that we didn't have dai set quite as tight as possible to fully stop things. I'm running Cisco 3750x if it matters. The interfaces are configured with ...
2
votes
0answers
167 views

Brocade FastIron ignoring ARP cache settings

I have a Brocade FastIron FESX648 and I'm attempting to increase the ARP cache timeout on a port that is connected to an IXP. According to the Brocade docs, I can increase the timeout up to 4 hours ...
1
vote
1answer
43 views

Arpping responding with Cisco ASA interface mac address and mac address of machine

For some reason our Cisco is responding to arp requests between machines on the same switch. It's not breaking anything but it is slowing initial connections. I've been making a lot of changes on the ...
1
vote
0answers
158 views

Cisco Asr1001 not able to receive 2048 macs (arps) in a sub-interface

I´m Brasilian, so excuse me any gramar error. I have a cisco router ASR1001 (IOS XE Version: 03.08.01.S) and I need to connect it to a service provider running BGP ipv4. This service provider gave me ...
1
vote
0answers
316 views

Why would a default gateway send two ARP responses to one ARP request?

We have a Netscreen router as the default gateway. I have a windows 7 machine in the network. I deleted the ARP cache on this windows machine using the command "arp -d". As soon as I did that, there ...
1
vote
0answers
220 views

Why does NMAp find disconnected devices?

I want to wake up and see the devices connected on my local network, using NMAP. So I execute this command : sudo nmap -sn -PU[7] -PE 10.11.204.1/24 (extract from the man page : sn: Ping Scan - ...
1
vote
1answer
119 views

Opinion on techinique to solve arp poisoning

I have been researching about prevention of ARP spoofing in an individual's device (smart phone or laptop) in a public network. If we save the MAC address of the default gateway at the time of ...
0
votes
2answers
256 views

How can i monitor ARP packet on WiFi network?

I want to monitor packet in my network. It said that ARP packet request broadcasted all over network. But why i only see my arp request packet and reply packet to the gateway?
-1
votes
1answer
96 views

How the broadcast MAC address accomplished?

The Layer 2 broadcast is the destination address of the Layer 2 package is FF-FF-FF-FF-FF-FF. I have a question about the broadcast MAC address. you see the ARP request, it send the destination MAC ...
-1
votes
1answer
44 views

Are there router or other network settings that can prevent the setting of a static IP addresson a client PC

We need to set up an application that requires the client PC to have a static IP address. It was having trouble retaining the assigned IP address between reboots until we disabled Gratuitous ARP. We ...